系统:Windows 7 语言版本:Anaconda3-4.3.0.1-Windows-x86_64 编辑器:pycharm-community-2016.3.2
Part 1:示例
df_1
,有4列["p1", "p2", "p3", "from"]
P1、P2、P3
三列的相关性图,其实就是两两的散点图,效果如下图矩阵图
Part 2:代码
import pandas as pdimport seaborn as snsfrom matplotlib import pyplot as plt
dict_1 = { "p1": [0.5, 0.8, 1.0, 1.2, 1.5, 2.5, 0.9, 0.6, 1.3, 1.0, 1.3, 1.6, 1.9, 2.5, 4.2, 3.5, 2.2, 1.2, 1.5, 0.5], "p2": [1.3, 2.8, 1.3, 1.4, 6.5, 2.5, 0.9, 0.6, 1.3, 1.0, 1.3, 1.6, 1.9, 2.5, 4.2, 3.5, 1.2, 1.2, 3.5, 2.5], "p3": [2.5, 0.8, 1.3, 1.2, 1.5, 2.8, 1.9, 0.6, 1.3, 1.1, 1.3, 1.6, 1.1, 2.5, 4.2, 3.9, 2.2, 1.2, 1.5, 0.5], "from": ["sample1", "sample1", "sample1", "sample1", "sample1", "sample2", "sample2", "sample2", "sample2", "sample2", "sample3", "sample3", "sample3", "sample3", "sample3", "sample4", "sample4", "sample4", "sample4", "sample4"]}
df_1 = pd.DataFrame(dict_1, columns=["p1", "p2", "p3", "from"])
print(df_1)
sns.set(style="ticks", color_codes=True)
g = sns.pairplot(df_1, hue="from", # 设置颜色列 palette="Set1", # 调色板:husl / Set1 markers=["o", "s", "D", "^"], # 设置标记marker形状 vars=["p1", "p2", "p3"])leg = g._legendleg.set_bbox_to_anchor([0.5, 0, 0.5, 0.5])
plt.show()
代码截图
df_1
Part 3:部分代码解读
g = sns.pairplot(df_1, hue="from", # 设置颜色列 palette="Set1", # 调色板:husl / Set1 markers=["o", "s", "D", "^"], # 设置标记marker形状 vars=["p1", "p2", "p3"])
df_1
数据源hue
设置已哪一列作为颜色的分类palette
设置颜色板,可以有多种不同的风格,如设置为 husl
,效果如下图markers
设置每个数据的标记形状vars
设置参与显示的列,如果更改为vars=["p1", "p2"]
,效果如下图husl效果图
vars=[“p1”, “p2”]
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